I am new to react I build a frontend using react and backend server is Flask. I build a cropper website for a particular type of pdf with fix coordinates. the issue is when I tested my website locally it was working totally fine. the hamburger menu was also working but now when I have deployed it on Heroku all things are working fine except the hamburger menu when the screen is small the hamburger menu appears but on clicking it nothing is happening. For CSS I am using bootstrap.